Three new species of the genus Bodotria (Crustacea: Cumacea: Bodotriidae) from the Yellow Sea in Korea Author Kim, Sung-Hyun 0000-0002-0648-5227 Department of Biological Sciences, Dankook University, Cheonan 31116, Korea & sunghyun. dku @ gmail. com; https: // orcid. org / 0000 - 0002 - 0648 - 5227 sunghyun.dku@gmail.com Author Lee, Chang-Mok 0000-0002-4149-8429 Hanmin High School, Paju 10955, Korea. mogiilee @ hotmail. com; https: // orcid. org / 0000 - 0002 - 4149 - 8429 mogiilee@hotmail.com Author Kim, Young-Hyo Department of Biological Sciences, Dankook University, Cheonan 31116, Korea text Zootaxa 2020 2020-10-30 4869 1 55 77 journal article 8946 10.11646/zootaxa.4869.1.2 c0471856-e429-45ed-a0ca-dc4eda1d8fa9 1175-5326 4418310 F9469841-1B63-4894-8BF8-A5E0EB1F30D5 Bodotria ( Bodotria ) pseudomaculosa sp. nov. ( Figs 10–13 ) (Korean Name: Han-jul-gom-bo-cham-ol-chaeng-i-sae-u, new) Type material. Holotype , adult male, 6.12 mm , cat no. NIBRIV0000837774, Jawol-myeon , Ongjin-gun , Incheonsi , Korea , 37° 00' 30.0"N , 126° 07' 30.0"E , depth 30–50 m , 23 May 2007 , ( S.J. Song ) collected by rectangular dredge (dissected). Diagnosis. Adult male. Carapace almost ovoid in dorsal view, surface covered with coarse squamose-reticulate patterning formed by large, shallow pits, dorso-median carina well-marked over whole length of carapace, dorsolateral carina well-developed over whole length of carapace and lower edge of mid-lateral depression forming an angular ridge, antennal notch and antero-lateral corner prominent, pseudorostral lobes wide and truncated, ocular lobe almost semicircular, with 8 lenses. Maxilliped 3 merus and carpus dilated. Pereopod 1 carpus little dilated. Pereopod 2 basis with plumose seta. Uropod peduncle with 3–5 plumose and 23–25 microserrate setae medially; endopod uniarticulate. Female unknown. Description. Holotype , adult male, 6.12 mm , cat no. NIBRIV0000837774. Carapace ( Figs. 10A, B , 11A, B ) about 1/4 of body length, almost ovoid in dorsal view, 1.4 times as long as wide, 1.8 times as long as deep; surface covered with coarse squamose-reticulate patterning formed by large, shallow pits; dorso-median carina well-marked over whole length of carapace; dorso-lateral carina well-developed over whole length of carapace and lower edge of mid-lateral depression forming an angular ridge; antennal notch and antero-lateral corner ( Fig. 11A ) prominent; pseudorostral lobes ( Fig. 11B ) wide and truncated, meeting in front of ocular lobe; ocular lobe ( Fig. 11B ) almost semicircular, with 8 lenses. Pereon 0.9 times as long as carapace length; dorso-median carina and lateral carina well-marked on all free pereonites. Pleon plump, 1.2 times as long as carapace and pereon together. FIGURE 10. Bodotria ( Bodotria ) pseudomaculosa sp. nov. , holotype, adult male, 6.12 mm: A, lateral view; B, carapace and pereon, dorsal view. Scale bars = 1.0 mm (A), 0.5 mm (B). Antenna 1 ( Fig. 11C ) peduncle 3-articulate; article 1 1.7 times as long as remaining articles combined, with numerous hair-like setae distally; article 2 0.3 times article 1 length, with 1 short simple and 5 complex pedunculate setae distally; article 3 1.3 times article 2 length, with 1 short simple seta on distal margin. Main flagellum 2-articulate; article 1 with 1 short simple seta and 6 aesthetascs; article 2 with 1 complex pedunculate, 1 short simple, 2 long simple setae, and 2 aesthetascs terminally. Accessory flagellum very minute, with 1 short simple and 1 complex pedunculate setae. Antenna 2 ( Figs. 11A, D ) extending beyond pleotelson; peduncle 5-articulated; article 2 with 2 plumose setae; articles 4–5 with numerous simple setae, 2 complex pedunculate setae dorsodistally. Left mandible ( Fig. 11E ) with row of few hair-like and 11 lifting setae;incisor with 5 teeth; lacinia mobilis with 3 teeth. Right mandible ( Fig. 11F ) with row of 9 lifting setae; incisor with 4 teeth. Maxilla 1 ( Fig. 11G ) outer endite with few hair-like setae on medial margin, 1 long simple seta laterally, several hair-like and 12 stout simple setae terminally; inner endite with 3 hair-like setae on mediodistally, 2 simple, 2 stout tricuspid, 2 stout microserrate setae terminally; palp broken, with 2 setae which one of the 2 setae has some hairs and another seta broken. Maxilla 2 ( Fig. 12A ) broad endite with several hair-like and 17 plumose setae medially, 3 plumose, 20 simple, 9 microserrate, 1 stout pappose, and 3 stout pappo-microserrate setae terminally; outer endite with 7 simple setae terminally; inner endite with 7 microserrate setae terminally. Maxilliped 1 ( Fig. 12B ) basis 1.3 times as long as remaining articles combined, with 4 short simple, several hair-like, and 1 long plumose setae, medial lobe with 2 hook and 5 plumose setae medially, 3 short simple setae distally, 4 plumose and 1 short simple setae on terminal margin; ischium absent; merus 0.3 times basis length, with 2 long plumose setae on medial distal corner, 1 short simple seta laterodistally; carpus 1.7 times merus length, with 14 plumose and 6 beak setae medially, 1 short simple seta on lateral face, 1 long plumose seta laterodistally; propodus 0.4 times carpus length, with 4 plumose, 2 plumo-microserrate, and 1 long plumose setae; dactylus 0.7 times propodus length, with 3 simple and 1 microserrate setae terminally. Maxilliped 2 ( Fig. 12C ) basis longer than remaining articles combined, with several hair-like and 1 short simple setae medially, 1 long plumose seta on medial distal corner, 1 simple and 4 short simple setae laterally; ischium short, unarmed; merus with 1 plumose seta medially, 1 short simple seta laterally; carpus 1.2 times merus length, with few setules and 5 plumose setae medially, 1 short simple seta laterally; propodus 0.7 times carpus length, with 8 plumose setae medially, 2 long plumose setae laterally; dactylus 0.4 times propodus length, with 6 simple, 1 microserrate, and 1 stout microserrate setae. Maxilliped 3 ( Fig. 12D ) basis 1.9 times as long as remaining articles combined, with numerous hair-like setae on both margins, 2 plumose setae on medial distal corner, 1 short simple seta on distal face; lateral corner very inflated, reaching to the middle of merus, with 8 plumose setae; ischium 0.1 times basis length, with 2 plumose setae medially; merus 1.2 times ischium length, with 1 plumose seta medially, 1 plumose seta on lateral corner; carpus 1.1 times merus length, with 5 plumose setae medially; propodus 0.6 times carpus length, with 4 plumo-microserrate setae medially, 1 short simple seta laterodistally; dactylus 0.8 times propodus length, with few hair-like setae medially, 1 short simple seta laterally, 3 simple, 2 microserrate, and 1 long microserrate setae terminally; exopod shorter than basis. Pereopod 1 ( Fig. 12E ) basis 1.4 times as long as remaining articles combined, with numerous hair-like and 14 microserrate setae medially, 1 long plumose seta mediodistally, 1 short simple seta on lateral distal face, 1 plumose seta laterodistally; ischium 0.05 times basis length, unarmed; merus 3.2 times ischium length, with 1 short simple seta with subterminal setules medially; carpus 2.1 times merus length, with 1 simple and 14 short simple setae; propodus 0.3 times carpus length, with 1 short simple seta medially, 2 simple setae on medial distal corner, 1 short simple seta laterodistally; dactylus subequal to propodus length, with 2 short simple, 2 simple, 1 microserrate, and 1 long microserrate setae; exopod shorter than basis. Pereopod 2 ( Fig. 13A ) basis fused with ischium, 1.4 times as long as remaining articles combined, with 1 short simple seta and 1 simple seta with subterminal setules medially, 2 long plumose and 4 short simple setae on medial face, 1 complex pedunculate and 2 short simple setae on lateral face, 3 short simple and 1 complex pedunculate setae laterally; merus 0.2 times basis length, with 1 simple seta with subterminal 1 plumose seta on near medial distal margin, 3 short simple setae on lateral face; carpus 1.2 times merus length, with 1 stout microserrate seta, 1 stout microserrate seta with single subterminal setule, and 1 stout long microserrate seta with subterminal 1 complex pedunculate seta on medial distal margin, 1 short simple and 1 simple setae laterodistally; propodus 0.6 times carpus length, unarmed; dactylus 1.8 times propodus length, with 4 short simple, 1 broken setae, and 2 simple setae with single subterminal setule. Pereopod 3 ( Fig. 13B ) basis 1.2 times as long as remaining articles combined, with 3 complex pedunculate setae medially, 2 short simple setae laterally, 1 long plumose seta on lateral distal corner; ischium 0.1 times basis length, with 1 short simple seta on lateral face, 2 annulate setae on lateral distal corner; merus 1.7 times ischium length, with 2 short simple and 1 annulate setae; carpus subequal to merus length, with 1 simple seta, 1 simple seta with subterminal setules, and 1 long simple seta single subterminal setule on medial distal corner, 1 simple seta laterally; propodus 0.8 times carpus length, with 1 long simple seta on medial distal corner; dactylus 0.5 times propodus length, with 2 simple and 1 stout microserrate setae terminally. Pereopod 4 ( Fig. 13C ) basis 0.8 times as long as remaining articles combined, with 4 complex pedunculate and 7 short simple setae medially, 1 long plumose seta on proximal lateral face, 5 short simple setae laterally, 1 long plumose seta on lateral distal corner; ischium 0.2 times basis length, with 1 short simple and 2 annulate setae laterodistally; merus 1.8 times ischium length, with 1 annulate seta laterodistally; carpus 1.2 times merus length, with 1 simple, 1 plumose setae, and 1 stout long simple seta with single subterminal setule on medial distal corner, 1 broken seta laterally; propodus 0.7 times carpus length, with 1 stout long simple seta with single subterminal setule on medial distal corner; dactylus 0.5 times propodus length, with 2 simple and 1 stout simple setae terminally. Pereopod 5 ( Fig. 13D ) basis 0.6 times as long as remaining articles combined, with 1 plumose, 3 short simple setae, and 1 short simple seta with single subterminal setule medially, 1 plumose and 2 short simple setae laterally, 1 plumose seta on lateral distal corner; ischium 0.3 times basis length, with 1 short simple and 2 annulate setae laterodistally; merus 1.8 times ischium length, with 2 short simple and 1 annulate setae laterally; carpus 1.1 times merus length, with 1 simple, 1 plumose setae, and 1 stout long simple seta with single subterminal setule on near medial distal corner, 1 complex pedunculate and 1 short simple setae laterally; propodus 0.7 times carpus length, with 1 stout long simple seta with single subterminal setule on medial distal corner; dactylus 0.5 times propodus length, with 2 simple and 1 stout simple setae terminally. Uropod ( Fig. 13E ) peduncle 1.5 times pleotelson length, with 3–5 plumose and 23–25 microserrate setae medially. Uropod endopod uniarticulate, 0.6 times peduncle length, with 12 stout microserrate setae with single subterminal setule medially, 1 stout microserrate seta with single subterminal setule and 1 stout microserrate seta terminally. Uropod exopod subequal to endopod length, article 1 unarmed; article 2 with 8–9 plumose setae medially, 1 short simple, 1 simple, and 1 long simple setae terminally. FIGURE 11. Bodotria ( Bodotria ) pseudomaculosa sp. nov. , holotype, adult male, 6.12 mm: A, habitus, lateral view; B, carapace and pereon, dorsal view; C, antenna 1; D, antenna 2; E, left mandible; F, right mandible; G, maxilla 1. Scale bars = 1.0 mm (A, B), 0.1 mm (C–F), 0.05 mm (G). FIGURE 12. Bodotria ( Bodotria ) pseudomaculosa sp. nov. , holotype, adult male, 6.12 mm: A, maxilla 2; B, maxilliped 1; C, maxilliped 2; D, maxilliped 3; E, pereopod 1. Scale bars = 0.2 mm (D, E), 0.1 mm (A–C). FIGURE 13. Bodotria ( Bodotria ) pseudomaculosa sp. nov. , holotype, adult male, 6.12 mm: A, pereopod 2; B, pereopod 3; C, pereopod 4; D, pereopod 5; E, pleotelson. Scale bars = 0.3 mm (E), 0.2 mm (A–D). Etymology. The new species is named pseudomaculosa due to similiarity to the species Bodotria maculosa . Remarks. The new species Bodotria ( Bodotria ) pseudomaculosa sp. nov. is similar to B . ( B .) maculosa Hale, 1944 in the combination of the following features: 1) carapace almost ovoid in dorsal view, surface covered with coarse squamose-reticulate patterning formed by large, shallow pits; 2) pseudorostral lobes wide and truncated; 3) carapace dorso-lateral carina well-developed over whole length of carapace; 4) all free pereonites, dorso-median carina and lateral carina well-marked; 5) uropod endopod uniarticulate. However, the new species is obviously distinguished from B . ( B .) maculosa by the combination of the following features ( Table 1 , condition of B . ( B .) maculosa in parentheses): 1) carapace, lower edge of mid-lateral depression forming an angular ridge ( vs . with a prominent longitudinal ridge and curves up posteriorly to meet the carina), 2) ocular lobe with 8 lenses ( vs . with 9 lenses); 3) third and fourth pereonites, dorso-median carina slight elevated posteriorly ( vs . dorso-median carina of third to fifth pereonites elevated posteriorly); 4) thoracic appendages, margins not serrate ( vs . more or less serrate); 5) uropod peduncle with plumose and microserrate setae medially ( vs . with only plumose seta). Depth. 30–50 m . Distribution. Korea (Yellow Sea).